Diamond Finger Milling Bits BRSCHNITT 20mm Dry Core Drill Bit for Enlarging Shaping Existing Holes of Porcelain,Hard Ceramic,Granite,Marble Hole Saw with M14 Thread

✔Save money--only 1pc Core Bit and this diamond milling bit,you can create holes of different sizes without buying any other diamond hole saws in different sizes. ✔Application--in Porcelain,Ceramic,Granite, Natural Stone,Stoneware,Marble,Marble Tile,Single-fired tiles,Double fired Glazed tile,etc,Wet and dry use, kitchen/bathroom/floor home renovation and maintenance. ✔【Tip】-Not recommended for drilling a hole and be designed to shape,trim,clean,round,grinding and enlarge existing holes. ✔Size -- 3/4"(20mm), 50mm workable length, M14 Thread, Grit #45/50, toal Length 65mm ✔Machine--Angle Grinder with M14 Thread.